ankylosing spondylitis juvenile spondyloarthropathy MONDO:0043377 juvenile spondyloarthropathy UMLS:C0409676 A group of chronic, inflammatory childhood diseases characterized by arthritis and enthesitis. This disorder can affect the axial skeleton in late childhood or young adulthood. NCIT:C114347 juvenile Spondyloarthritis JSpA MEDGEN:592564 SCTID:239806000